There are currently a total of (1) companies in this list.
The Geysers
The Geysers, comprising 45 square miles along the Sonoma and Lake County border, is the largest complex of geothermal power plants in the world.Calpine, the largest geothermal power producer in the U.S., owns and operates 15 power plants at The Geysers with a net generating capacity of about 725 megawatts of electricity - enough to power 725,000 homes, or a city the size of San Francisco.
Manufacturers site:
Note: Some of the companies listed in this California The Geysers Directory may also own/manufacture/raise/produce them in other states and countries as well. Many businesses alter their brand names, practices and designs with little or no notice, so if there are still questions that remain, we suggest contacting the manufacturer directly.